Funding for this research was provided by:
National Institutes of Health (1R01HD089713-01)
Received: 25 April 2019
Accepted: 22 July 2019
First Online: 9 August 2019
Ethics approval and consent to participate
: The bulk of the data used in this study is from public repositories. Additional molecular investigations of the Vancouver cohort is covered under Ethics approval obtained from the University of British Columbia and BC Women’s and Children’s Hospital research ethics board in Vancouver, BC, Canada (certificate numbers H16-02280, H04-704488).
: Not applicable.
: The authors declare that they have no competing interests.